Toggle-link lock for recoil-loading guns.



I PATENTED NOV. 14, 1905 I A. W. SCHWARZLOSB. x-TO'GGLE LINK LOOK FOR REGOI L LOADING GUNS.

APPLICATION FILED DEC 3 SHEETS-SHEET 1.

PATENTED NOV. 14, 1905.

A. W. SGHWARZLOSE. TOGGLB LINK LOOK FOR REGOIL LOADING GUNS.

APPLICATION FILED DEG.21,1901.

3 SHEETS-SHEET 2.

PATENTEB H0114, was.

A. W, SCHWARZLOSE.

EEK LOCK FOR EECOIL LEADING GUNS.

APPLICATION FILED D 3 SHEETS-SHEET 3.

nuantot 1% g I flti oznmgt g n woo: nm' 0 middle link is at right angles to the bolt,

warren s rrrrns rarniir enrich.

annnnas 'WILHELM SCHWARZLOSE, or S'UHL, GERMANYY TOGGLEeLBNK Look eon REGQiL-L'OADENG GUNS. a

.3330. scarce.

Specification of Letters B atant. i

Patented NOV. 14a 1905;

.hpplieation filed December 21, 1901. Serial Bio. 86,807.

To all whom it natty-concern:

Be it known that I, ANDREAs WILEELM SGHTWARZLOSE, engineer, a subject of the Gen man Emperor, residing at Suhl, in the Empire of Germany, have invented certain new and useful Improvements in and Relating to Toggle-Link Locks for Recoil-Loading Guns, of which the following is a specification.

This invention relates to a recoil-loading backward. Consequently when the lock is opened automatically by the pressure of the gas the bolt is drawn back by the energy stored in the locking-links onlyuntil the which occurs-when the bolt has completed one-half of its return movement. The further backward movement of the bolt is then effected entirely by the energy imparted to it in the meantime by the link, while the link itself has then a retarding action on the bolt, since in the initial movement it cannot swing farther, but must be drawn back by the bolt, thereby causing a considerable loss of power. Now these disadvantages are obviated by the present new lock, which has also a more suitable form for hand-firearms. Such a lock is shown in the accompanying drawings applied to a pistol. I

Figure 1 is a longitudinal section through the weapon with the locking-links in elevation, the lock closed, and the striker cocked. Fig. 2 is a similar section showing the lock completely open. Figs. 3 and 4 are a plan and an end view, respectively, of the weapon with thelock closed and the cartridge discharged; and Figs. 5 to 10 are views of details.

Fig. 11 is a horizontal sectional view substantially on the line 11 ll of Fig. 12. Fig.

12 is a vertical longitudinalsection of the trigger mechanism and parts shownin Fig. 11.

The barrel 1 is screwed to the fore-end of the lock-casing is, which is formed as a stock The lock-casing is providedat'theupper part in the axis of the barrel with a rectangular guideway for the bolt 0 and the bridge 12 for the outer link at, Fig. 9. The bolt 0, Fig. 10, has a longitpdinal hole for the striker s, Fig. 7, with the firing-spring f. which bears at its rear end against the guide-piece g,

which is connected to the casing by a eranked spindle q, while the bolt slides, freety with its longitudinal groove 6 over the guide- The locking of the bolt in firing c. 0., the actual closing of the barrel-is then' piece.

effected by the inner link a, Fig. 8, in combination with the outer link d, Fig. 9., in the following manner: The outer link (Z is conneeted by the pin o ta the lock-casing k, while the inner link a has two pins 0 at the rear end, which are inserted into locking-recesses n on the bolt. The free ends of the links are connected by the pins 20, Figs. 1 and 2. When the lockis closed, Fig. 1. the pres sure exerted .by the gases on the bolt when the weapon is fired isconsequently transmitted from the bolt to the middle link a through the rear pins 0.- The middle link abears, with the forward projections, on the outer link (i, which in its turn bears on the bridge 0 of the lock-casing. case, the lock for recoil-loading guns is used with a fixed barrel the arrangement is such that the forward pin 20 is located higher when Now if, as in the present the lock is closed than the plane passing through the axis of the rear pins 0 and rear axis of rotation of the link (Z. In this case it is obvious that the pressure of the gases the is taken up by the locking-links; but at the same time the forward end of the link swingsupward and backward in consequence of this pressure, and the lock is opened. Now as the forward end of the link that effects the opening of the lock is moved continuously in one direction until the lock is completely open all the energy stored will therefore be utilized exclusively for opening the lock and compress-I ing the corresponding springs.

' W'hen the locking parts are swung upward, the coiled spring it, which is made with upwardly-turned ends, is simultaneously compressed by means of the link or stirrup 6, attached to the link (Z, and the firingspring f is compressed. These two springs combine to move the bolt forward after the counter-pressure ceases until the firing-pinis caught by the sear c, whereupon the spring h effects the completion of the closing alone. sear i, Fig. 5, is mounted on a pin that passes through the casing. The rear end of the sear c is constantly pressed upward bythe -second free end of the spring 72, Fig. 1. The-releasing of the sear, and consequently the discharging of the shot, is effected by means of the trigger, Fig. 6, which is provided with an outwardly-bentarm m. When the trigger is The be fore-mentioned .pulled backward against the action of the spring f, its arm :22 presses the forward end of the sear z' upward, so that its rear arm, which is in engagement with the projection I of the striker s, is lowered and disengaged from the projection 1', so as to enable the striker to spring forward against the percussion-cap. By'this movement the boss Zon the sear is raised into the path of the bolt. hen subsequently the bolt is moved rearward, an inclined surface Fig. 11, thereon bears on the boss 1" and presses the forward arm of the sear laterally into a recess in the adjacent wall of the casing to such an extent that it passes ofl from the arm at of the trigger. When in the position just described, which is shown in dotted lines in Fig. 11, the forward arm of the sear isno longer supported by the trigger and its rear end is under the influence of the spring k moved upward sufficiently far to engage the stop r before the trigger has been released, as shown in Fig. 2 To enable the sear to effect the before-described lateral movement, it is mounted on its pin with some play, while a small laterally-acting coiled spring IL (seen in dotted lines in Figs. 1 and 2) acts upon the sear in such a way that its forward arm comes again over the trigger as soon as-the said trigger is released and swings downwardly.

A safety-lock u, Figs. 2, 3, and 12, is provided to insure the safety of the weapon. This lock extends with its flattened screw- ;pindle inward over the sear. 1f the cranked portion on the left-hand side of the lock-caslng is moved upward, the unflattened portion f the spindle bears on the sear so that it can iot swing upward-J. ta, it cannot be drawn way from the striker.

The cartridge-magazine (not shown) is in- ;erted from below into the stock of the pistol Llld is held therein by means of a spring-catch )f known construction.

The weapon acts in the following manner: in order to load the weapon, the magazine illed with cartridges is first inserted into the took until the spring-catch on the stock on- :ages in a corresponding notch on the maga- ;ine.' Thereupon the locking-link is comiletely drawn back by means of the suitablyormed portion a .of the inner link and is subequently released. The bolt then springs utomatically forward and pushes the upper artridge into the barrel, while the lockingink simultaneously locks the barrel and the weapon is ready for firing. \Vhen the trigex is pulled, the striker s springs forward nder the pressure of the spring f and tires he cartridge. The pressure exerted on the and /a force the bolt again forward.

bolt by the gases generated in firing is transmitted in the above-dcseribed manner to the locking-link. \Vhen the pressure has overcome the inertia of the link and the power of the springs f'and II, the link swings upwardly and backwardly and automatically opens the look while compressing the springs f and 7t. At. the same time the empty cartridge-case is removed from the barrel by the extractor, which is not shown in the drawings, and is thrown out in an upward direction ,by the ejector j. 4 Furthermore, the bolt presses the boss z"of the sear outwardly, so that the sear is removed from the trigger and is at once moved upward again by the spring /2 \Vhen the backward movement ceases, the springsf I In this case the bolt pushes into the barrel the upper cartridge, which has been forced upward in the meantime into its path by the spring of the magazine. The'striker a is caught halfway as it springs forward by the sear 1', so that the springf retains the necessary compression for firing, while the closing-spring 71 alone moves the bolt forward and closes it by means of the link. \Vhen the trigger is released, its spring f forces it again forward, so that the arm or again moves downward, whereupon the spring l1 presses the forward arm of the sear 2' inward and placesit again above 112. A renewal of pressure on the trigger therefore releases the following shot, and the hereinbefore-described operation is repeated.

Having now mrticularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is" 1. In a recoil-loading gun with a togglelink lock, the striker, the sear engaging and holding the striker retracted, and means for releasing the sear from the detent during the passage of the shot, such means comprising an inclined surface on the breech-block and a boss on the sear engaged thereby, whereby the sear-arm is then pressed outwardly, substantially as and for the purposes set forth.

2. In a recoil-loading gun with a togglelink lock, the combination of the sear 1', and a coil-spring /1. having one end connected with the toggle-link (Z, by a link or stirrup, and its other end engaging and pressing the sear upward, substantially asand for the purpose set forth. I

Signed this 9th day of December, 1901, at Coburg, Germany.

ANDREAS \Ylhlltlhll SCHWARZLOSE. \Vitn'esses:

ERXEST GUMPERT, MAX SCHUSTER. 

